:root{--bg:#0b0f17;--panel:#111a2a;--panel-2:#0e1524;--text:#e7eefc;--muted:#a6b3ce;--border:rgba(255,255,255,0.12);--accent:#7dd3fc;--accent-2:#a7f3d0;--danger:#fb7185}*{box-sizing:border-box}body,html{padding:0;margin:0;height:100%;background:radial-gradient(1200px 800px at 20% 0,rgba(125,211,252,.15),transparent 55%),radial-gradient(900px 700px at 80% 10%,rgba(167,243,208,.12),transparent 60%),linear-gradient(180deg,#070a10,var(--bg));color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.container{width:min(1780px,calc(100vw - 32px));max-width:none;margin:0 auto;padding:24px 16px 48px}.header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:16px}.title{font-size:28px;font-weight:700;letter-spacing:-.02em}.subtitle{margin-top:6px;line-height:1.5;font-size:14px}.chip,.subtitle{color:var(--muted)}.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.04);font-size:12px}.panel{border:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border-radius:14px;overflow:hidden;box-shadow:0 10px 40px rgba(0,0,0,.35)}.panelHeader{padding:14px 16px;border-bottom:1px solid var(--border);background:rgba(0,0,0,.22)}.tabBar{display:flex;gap:10px;align-items:center;margin-bottom:10px}.tab{border:1px solid var(--border);border-radius:999px;padding:6px 12px;cursor:pointer;color:var(--muted);background:rgba(255,255,255,.04)}.tab.active{color:var(--text);border-color:rgba(125,211,252,.45);background:rgba(125,211,252,.12)}.panelHeader p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}.messages{padding:16px;flex-direction:column;gap:12px;max-height:62vh;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.messages,.msgRow{display:flex}.msgRow.user{justify-content:flex-end}.bubble{max-width:min(1320px,96%);border:1px solid var(--border);border-radius:12px;padding:12px;background:rgba(17,26,42,.7)}.bubble.user{background:rgba(125,211,252,.12);border-color:rgba(125,211,252,.25)}.meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px;margin-bottom:8px}.content{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:13px;line-height:1.6}.content a,.mdPreview a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}.content a:hover,.mdPreview a:hover{color:#bae6fd}.composer{padding:14px 16px;border-top:1px solid var(--border);background:rgba(0,0,0,.18)}.row{display:flex;gap:10px;align-items:flex-end}.field{width:100%;border:1px solid var(--border);border-radius:12px;background:rgba(0,0,0,.18);color:var(--text);padding:10px 12px}textarea.field{min-height:44px;max-height:180px;resize:vertical}.btn{border:1px solid var(--border);border-radius:12px;padding:10px 12px;cursor:pointer;color:var(--text);background:rgba(255,255,255,.06)}.btnPrimary{border-color:rgba(125,211,252,.35);background:linear-gradient(180deg,rgba(125,211,252,.22),rgba(125,211,252,.1))}.btnDanger{border-color:rgba(251,113,133,.35);background:rgba(251,113,133,.12)}.btn:disabled{cursor:not-allowed;opacity:.5}.helper{margin-top:8px;color:var(--muted);font-size:12px;line-height:1.4}.error{margin-top:10px;color:var(--danger);font-size:13px}.filesShell{grid-template-columns:minmax(460px,38%) minmax(0,1fr)}.chatShell,.filesShell{display:grid;height:72vh;min-height:520px}.chatShell{grid-template-columns:320px minmax(0,1fr)}.chatLeft{background:rgba(0,0,0,.12);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;min-height:0}.chatLeftHeader{padding:12px;border-bottom:1px solid var(--border);display:flex;gap:10px;align-items:center}.chatLeftError{margin:0}.chatLeftError,.chatLeftStatus{padding:0 12px 10px}.chatList{overflow:auto;padding:6px;overscroll-behavior:contain}.chatItemRow{display:flex;gap:6px;align-items:center}.btnSm{padding:4px 8px;min-height:26px;font-size:12px;line-height:1}.chatItem{width:100%;flex:1 1;min-width:0;border:1px solid transparent;border-radius:12px;padding:10px;cursor:pointer;background:transparent;color:var(--text);text-align:left}.chatItem:hover{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.07)}.chatItem.active{background:rgba(125,211,252,.12);border-color:rgba(125,211,252,.28)}.chatItemDelete{flex:0 0 auto;min-width:28px;width:28px;justify-content:center;align-items:center;border-radius:999px;border-color:rgba(251,113,133,.35)}.btnSm.btnDanger.chatItemDelete{color:#fee2e2;background:rgba(251,113,133,.14)}.btnSm.btnDanger.chatItemDelete:hover:not(:disabled){background:rgba(251,113,133,.22);border-color:rgba(251,113,133,.6)}.chatItemTitle{font-size:13px;font-weight:600}.chatItemMeta,.chatItemTitle{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chatItemMeta{margin-top:6px;color:var(--muted);font-size:11px}.chatRight{min-width:0;display:flex;flex-direction:column;min-height:0;position:relative}.chatRight .messages{max-height:none;flex:1 1;min-height:0}.scrollFab{position:absolute;right:14px;bottom:90px;border:1px solid rgba(125,211,252,.35);border-radius:999px;padding:8px 12px;cursor:pointer;color:var(--text);background:rgba(17,26,42,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.scrollFab:hover{border-color:rgba(125,211,252,.55)}.filesLeft{background:rgba(0,0,0,.12);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;min-height:0}.filesToolbar{padding:12px;border-bottom:1px solid var(--border)}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-bottom:10px}.crumbBtn{border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;padding:5px 10px;font-size:12px}.crumbSep{color:var(--muted);font-size:12px}.filesControls{display:flex;gap:10px;align-items:center}.filesSortControls{margin-top:8px}.filesSortLabel{margin:0;min-width:30px}.filesSortSelect{min-height:36px;padding:6px 10px;max-width:140px}.filesSummary{margin-top:8px;font-size:12px}.fileList{overflow:auto;padding:6px;overscroll-behavior:contain}.fileRow{width:100%;display:flex;align-items:flex-start;justify-content:flex-start;gap:12px;border:1px solid transparent;border-radius:10px;padding:10px;cursor:pointer;background:transparent;color:var(--text);text-align:left}.fileRow:hover{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.07)}.fileRow.active{background:rgba(125,211,252,.12);border-color:rgba(125,211,252,.28)}.fileMain{display:flex;align-items:center;gap:10px;min-width:0;flex:1 1}.fileIcon{display:inline-flex;align-items:center;justify-content:center;min-width:42px;padding:4px 8px;border-radius:999px;border:1px solid var(--border);background:rgba(0,0,0,.18);color:var(--muted);font-size:11px;letter-spacing:.02em}.fileInfo{min-width:0;display:flex;flex-direction:column;gap:4px;flex:1 1}.fileTitle{font-size:14px;font-weight:600;line-height:1.35;white-space:normal;overflow-wrap:anywhere}.fileMeta,.fileSubPath{color:var(--muted);font-size:11px;line-height:1.35;white-space:normal}.fileSubPath{opacity:.85;overflow-wrap:anywhere}.fileMetaMuted{opacity:.8}.fileOpenHint{color:var(--muted);font-size:11px;white-space:nowrap;align-self:center}.filesRight{min-width:0;display:flex;flex-direction:column;padding:12px;min-height:0}.previewPlaceholder{color:var(--muted);font-size:14px;line-height:1.6;border:1px dashed rgba(255,255,255,.16);border-radius:14px;padding:18px;background:rgba(0,0,0,.12)}.previewHeader{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border:1px solid var(--border);border-radius:14px;background:rgba(0,0,0,.14);margin-bottom:12px}.previewTitle{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.previewActions{display:flex;gap:10px;align-items:center}.previewFrame{width:100%;flex:1 1;border:1px solid var(--border);border-radius:14px;background:rgba(0,0,0,.1)}.previewImage{height:auto;object-fit:contain}.previewImage,.previewVideo{max-height:calc(72vh - 120px);background:rgba(0,0,0,.1)}.mdPreview,.previewImage,.previewVideo{width:100%;border:1px solid var(--border);border-radius:14px}.mdPreview{flex:1 1;background:rgba(0,0,0,.12);padding:12px;overflow:auto;overscroll-behavior:contain;white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:13px;line-height:1.6}.authShell{min-height:100dvh;display:grid;place-items:center;padding:24px 16px}.authCard{width:min(420px,100%)}.authForm{padding:16px;gap:14px}.authForm,.authLabel{display:flex;flex-direction:column}.authLabel{gap:6px;color:var(--muted);font-size:13px}.authError{margin-top:2px}.authNote{margin:0}@media (max-width:640px){.header,.row{flex-direction:column;align-items:stretch}}@media (max-width:900px){.chatShell,.filesShell{grid-template-columns:1fr;height:auto;min-height:0}.chatLeft,.filesLeft{border-right:none;border-bottom:1px solid var(--border)}.filesControls{flex-direction:column;align-items:stretch}.filesSortSelect{max-width:none}.chatLeftHeader{flex-direction:column;align-items:stretch}.previewFrame{height:70vh;flex:0 0 auto}}